XADO Snipex “Rhino Hunter” and M75 Large Caliber Sniper / Anti-materiel rifles were designed and are produced by a Ukrainian company XADO Chemical group, which was previously known for various chemical products. Both rifles are based on the same unique single shot, self-ejecting action, patented in Ukraine, and differ primary in type of ammunition used. The concept of the “automatic ejection” for a single shot weapon was probably inspired by an WW2-era Degtyarov PTRD anti-tank rifle.

The XADO Snipex “Rhino Hunter” rifle is chambered for .50BMG / 12.7×99 mm ammunition and is advertised as a long range sporting / hunting weapon. It is offered for sale to civilians as a hunting weapon.

The XADO Snipex M75 sniper rifle is chambered for 12.7×108 cartridge, an old Soviet warhorse which is still in use by Ukrainian army. It is advertised as a “long range precision weapon”, but taking into account that this gun has a moving barrel and Ukraine has no domestic production of the target / sniper grade 12.7×108 ammunition, this weapon is really a medium-range anti-material rifle rather than a dedicated long range sniper weapon.

The XADO Snipex rifles are single shot, automatically ejecting rifles of an indigenous design. To fire the gun for the first time, operator has to manually pull back the bolt handle, load a single round by hand into the chamber, manually close the bolt and then pull the trigger. Once the gun is fired, barrel recoils back for about 25mm (1 inch) against its buffer spring, to reduce peak felt recoil. The bolt group is opened automatically and the spent case ejected by the bolt thanks to a separate inertia-type action, similar in concept to one used in Benelli inertia-operated shotguns. After ejection is completed, bolt remains in the open position, and operator can manually load next round into the chamber and then close the bolt by hand. Barrel locking is achieved by a rotating bolt head with three rows of radial lugs that engage the barrel when locked. Both versions are equipped with folding bipod and a massive muzzle brake. No iron sights are provided; Snipex “Rhino Hunter” rifle is provided with permanent Picatinny rail attached to the receiver; Snipex M75 rifle has an adjustable Picatinny rail that can be adjusted for elevation between 0 and 70 mils in 10-mil steps.